) The threshold of hearing is quoted as 1.0 × 10 W m ?. Explain what is meant by the threshold Thearing and state the frequency at which the threshold has this value. Furthermore, state two (2) easons why the logarithmic dB scale is used to compare sounds of different intensities. The smallest ncrease in sound intensity which the human ear can detect is about 12%. Express this change in ecibels.

Q: People with good hearing can perceive sounds as low as -8.00 dB at a frequency of 3000 Hz. What is…

A:

Q: A sound wave has a frequency of 1998n Hz. What is the distance between crests or copressions of the…

A: Distance between two succesive compression or crests is known as wavelength of the wave. we know…

Q: Calculate the wavelengths of sounds at the extremes of audible range, 20 and 20000Hz, in 30.0o C…

A:

Q: What microscopic properties of the air make the speed of sound dependent on its temperature?…

A: The answer is given below

Q: What frequencies will a 1.80-m-long tube produce in the audible range at 20.0ºC if: (a) The tube is…

A: Given: The length of the tube is 1.80 m. The temperature of the air is 20.0° C. Introduction: The…

Q: A Small source enmits san d wayes Jo mad output of o the intensity g.00 80.0 W. Q. Find n from the…

A: Power output  of a small sound source= 80 W

Q: At a height of twelve meters above the surface of a freshwater lake, a sound pulse is generated. The…

A:

Q: Unless otherwise indicated, for this problem, assume that the speed of sound through human tissues…

A: The observed frequency will be,

Q: Use the following information for determining sound intensity. The number of decibels 6 of a sound…

A:

Q: The drever of a car traveling 31.0 m/s e sounds his horn as he an intersechoN.. If the horn has a of…

A:

Q: What fundamental frequency would you expect from blowing across the top of an empty soda bottle that…

A: OSCILLATION AND WAVES

Q: An 8-hour exposure to a sound intensity level of 90.0 dB can cause hearing damage. How much energy,…

A:

Q: A sound wave was observed to have traveled a distance of 3500 meters in 1 minute and 13 seconds.What…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Eavesdropping! You are trying to overhear a juicy conversation, but from your distance of 15.0 m, it…

A: It is given that,  Io=10-12 W/m2

Q: The lowest frequency a certain sound receiver can detect is 760 Hz. If the receiver detects a…

A: The given data are: Δf=4 Hzf=762 Hz Here, Δf denotes the beats per second and f denotes the…

Q: An 6 hour exposure to a sound intensity level of 90.0 dB may cause hearing damage. What energy in…

A:

Q: Why does the attached formula for Sound Intensity not depend on distance from the source?  Does it…

A:

Q: A sound wave has a frequency of 2500 Hz.  What is the distancce between crests or compressions?…

A: As per guidelines firs question is answered, kindly post another question as a new question.

Q: What is the speaker's power output if the sound intensity level is 108 dB at a distance of 25 m?…

A:

Q: A bungee jumper jumps from rest and screams with a frequency of 451 Hz. The air temperature is 20…

A:

Q: What frequency of sound traveling in air at 208C has a wavelength equal to 1.7 m, the average height…

A:

Q: The higher frequency limit for human hearing is 22.8 kHz. If the air temperature is 33.3 °C, the…

A:

Q: The speed of sound in air at NTP is 331m/s. Calculate the speed when the temperature rises to 91…

A:

Q: A typist typing briskly across a room creates an average sound level of 60.0 dB. What will be the…

A: Given value--- sound level = 60 dB. We have to find--- Intensity of one typist?

Q: The relationship between the number of decibles B and the intensity I in watts per square meteris…

A: Let original intensity = I new intensity = 100 I B = 10 log ( I * 1012)B1 = 10 log ( I * 1012)B2 =…

Q: Question 1. Show that the difference in decibel levels 3, and 32 of a sound source related to the…

A:

Q: People with good hearing can perceive sounds as low in level as -9.00 dB at a frequency of 2700 Hz.…

A: Formula of intensity in dB is as follows; I(dB)=10 log II0…

Q: The driver ofa car travelins 16.0 m/s sounds his horn as he approaches anintersechon, If the horn…

A:

Q: What is the intensity in watts per meter squared of 81.0-dB sound? (You do not need to enter any…

A:

Q: During a thunderstorm, 3.0 s elapses between observing a lightning flash and hearing the resulting…

A: Given, During a thunderstorm, 3.0 s elapses between observing a lightning flash and hearing the…

Q: One physics teacher lecturing produces a sound intensity level of 61 dB . It's a scary thought, but…

A: Given. β1=loudness of on teacher=61dBNumber of teachers=100recallβ=loudness=10dBlogI/I0Where…

Q: There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as…

A: We know, The intensity level of sound at a distance r2 from the elephant is given by

Q: The driver of a car traveling 22.0 m/s sounds his horn as he approaches an intersection. If the horn…

A:

Q: A Doppler flow meter uses ultrasound waves to measure blood-flow speeds. Suppose the device emits…

A: AIM: To find the expected beat frequency of blood flowing in large leg arteries GIVEN: Initial…

Q: A point source emits sound waves with a power ontput of 288 watts. What is the sound level (in dB)…

A: Answer Given  Power P = 288 W Distance d = 69.7 m We have to find sound level at distance 69.7 m.…

Q: Assuming the speed of sound at a certain temperature is 343m/s. Compute the distance of the source…

A: Given data: Speed of sound (v) = 343 m/s Time taken to hear a echo (t) = 3.00 s Required: Distance…

Q: The time delay between the transmission and the arrival of the reflected wave of an ultrasound…

A: Given,                    the time delay between transmission  (t)  =  0.085 ms…

Q: Approximately how many times louder is a 165-dB sound than a 85-dB sound? 10,000,000 Need Heln?…

A:

Q: The record for the world’s loudest burp is 109.9 dB, measured at a distance of 2.5 m from the…

A: Given data: Sound intensity level, β=109.9 dB Distance, r=2.5 m Known data: Threshold intensity of…

Q: A sıren is designed to create a decibel level of 117 dB at a distance of 13m. Cal culate the sound…

A: According to question we need to find--- intensity of sound?

Q: In a pig-calling contest, a caller produces a sound with an intensity level of 110 dB. How many such…

A: A caller produces a sound with an intensity level,

Q: On a workday, the average decibel level of a busy street is 70.0 dB, with 100 cars passing a given…

A: Calculating the decibel level of 25 cars:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.